L (Lt Blue) wire: From "N" to voltage reg
G (Green) wire: From "F" to voltage reg
B (Black) wire: From "E" to voltage reg
W (White) wire: From "B" post to battery (should be red .85 fusible link on this wire at the battery - it will likely be in plug with a green .5 fusible link)
If you have it right, BEFORE you turn on the ignition:
-The White wire ("B" post) should be hot
When you turn to ACC:
-The charge light should and either the Blue wire ("N" terminal) or the Black wire ("E" terminal) should be hot - not sure which one though
When you turn engine to the ON position:
-The Green wire ("F" terminal) should come hot
Before anything though, I would check to make sure your fusible links aren't fried and that your charge light relay works - you truck will not charge without either of these.